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17 May 2024: Card library updated.

Hall of Gemstone

1GG · World Enchantment

At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color.

Similar cards

Color identity:
NameManaTypeText
Virtus's Maneuver 2BSorcery For each player, choose friend or foe. Each friend returns a creature card from their graveyard to their hand. Each foe sacrifices a creature they control.
Pure Reflection 2WEnchantment Whenever a player casts a creature spell, destroy all Reflections. Then that player creates an X/X white Reflection creature token, where X is the mana value of that spell.
Staff of Nin 6Artifact At the beginning of your upkeep, draw a card. {T}: Staff of Nin deals 1 damage to any target.
Triskaidekaphile 1UCreature — Human Wizard You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card. 1/3
Mistform Wakecaster 4UCreature — Illusion Flying {1}: Mistform Wakecaster becomes the creature type of your choice until end of turn. {2}{U}{U}, {T}: Choose a creature type. Each creature you control becomes that type until end of turn. 2/3
Structural Collapse 5RSorcery Target player sacrifices an artifact and a land. Structural Collapse deals 2 damage to that player.
Run Away Together 1UInstant Choose two target creatures controlled by different players. Return those creatures to their owners' hands.
Icy Manipulator 4Artifact {1}, {T}: Tap target artifact, creature, or land.
Thumbscrews 2Artifact At the beginning of your upkeep, if you have five or more cards in hand, Thumbscrews deals 1 damage to target opponent or planeswalker.
Kayla's Kindling 3RREnchantment When Kayla's Kindling enters the battlefield, it deals 2 damage to any target. At the beginning of your upkeep, draft a card from Kayla's Kindling's spellbook and exile it. Until end of turn, you may cast that card.
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